Water ice on the satellite of Kuiper Belt object 2003 EL61

被引：48

作者：

Barkume, KM ^{[1
]}

Brown, ME ^{[1
]}

Schaller, EL ^{[1
]}

机构：

[1] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA

来源：

ASTROPHYSICAL JOURNAL | 2006年 / 640卷 / 01期

关键词：

comets : general; infrared : solar system; minor planets; asteroids;

D O I：

10.1086/503159

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have obtained a near-infrared spectrum of the brightest satellite of the large Kuiper Belt object 2003 EL61. The spectrum has absorption features at 1.5 and 2.0 mu m, indicating that water ice is present on the surface. We find that the satellite's absorption lines are much deeper than water ice features typically found on Kuiper Belt objects. We argue that the unusual spectrum indicates that the satellite was likely formed by impact and not by capture.

引用

页码：L87 / L89

页数：3

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